diff --git a/src/BizHawk.Emulation.Cores/Arcades/MAME/LibMAME.cs b/src/BizHawk.Emulation.Cores/Arcades/MAME/LibMAME.cs
index 7caaf77852..ac6877f6b7 100644
--- a/src/BizHawk.Emulation.Cores/Arcades/MAME/LibMAME.cs
+++ b/src/BizHawk.Emulation.Cores/Arcades/MAME/LibMAME.cs
@@ -5,7 +5,7 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
 {
 	public static class LibMAME
 	{
-		internal const string dll = "libmamearcade.dll"; // libmamearcade.dll libpacmanshd.dll
+		internal const string dll = "libmamearcade.dll"; // libmamearcade.dll libpacshd.dll
 		private const CallingConvention cc = CallingConvention.Cdecl;
 
 		public enum OutputChannel
diff --git a/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.ISettable.cs b/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.ISettable.cs
index 7fd5ceab59..da095f881f 100644
--- a/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.ISettable.cs
+++ b/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.ISettable.cs
@@ -28,7 +28,7 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
 
 		public class MAMESyncSettings
 		{
-			public Dictionary<string, string> DriverSettings { get; set; } = new Dictionary<string, string>();
+			public SortedDictionary<string, string> DriverSettings { get; set; } = new SortedDictionary<string, string>();
 
 			public static bool NeedsReboot(MAMESyncSettings x, MAMESyncSettings y)
 			{
@@ -39,7 +39,7 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
 			{
 				return new MAMESyncSettings
 				{
-					DriverSettings = new Dictionary<string, string>(DriverSettings)
+					DriverSettings = new SortedDictionary<string, string>(DriverSettings)
 				};
 			}
 		}
diff --git a/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.cs b/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.cs
index a43839135c..8938019e1f 100644
--- a/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.cs
+++ b/src/BizHawk.Emulation.Cores/Arcades/MAME/MAME.cs
@@ -153,7 +153,7 @@ namespace BizHawk.Emulation.Cores.Arcades.MAME
 				, "-nonvram_save"                       // prevent dumping non-volatile ram to disk
 				, "-artpath",          "mame\\artwork"  // path to load artowrk from
 				, "-diff_directory",      "mame\\diff"  // hdd diffs, whenever stuff is written back to an image
-				, "-cfg_directory",                ":"  // send invalid path to prevent cfg handling
+				, "-cfg_directory",                "?"  // send invalid path to prevent cfg handling
 				, "-volume",                     "-32"  // lowest attenuation means mame osd remains silent
 				, "-output",                 "console"  // print everything to hawk console
 				, "-samplerate", _sampleRate.ToString() // match hawk samplerate